#!/bin/bash

# This program upgrades your existing Wordpress installations that you are running on your server.
#
# You need to make the necessary adjustments to this script as needed for your situation.
#
# Make this script executable: 'chmod 777 wp_upgrade.sh'
# Run the script: './wp_upgrade.sh'
#
# Author: Aaron Toponce
# License: GPL v2
# Version: 0.1.1

# =================== Start of Script =================== #

# Provide the necessary directories to what Wordpress installations need to be backed up space delimited
# Change as necessary and uncomment
# For example, if you had 3 sites in /var/www/site1, /var/www/site2 and /var/www/site3
# then it would look like below (do not add the trailing slash):
# directories=(/var/www/site1 /var/www/site2 /var/www/site3)
number=${#directories[@]}
# Testing that all directories specified above are valid before beginning
for (( i = 0 ; i < number ; i++ )); do
	if [[ ! -d ${directories[$i]} ]]; then
		echo "Directory ${$directories[$i]} does not exist."
		return 1
	fi
done
 
# First, we need to get the necessary file
cd ~
 
if [[ -f wordpress.tar.gz ]]; then
	echo "wordpress.tar.gz exists.  Please take notice to this upgrade before continuing."
	return 1
fi
 
wget http://wordpress.org/latest.tar.gz
 
echo "First disable all plugins on all installations before continuing."
echo "Press any key to continue..."
read blah
 
for (( i = 0 ; i < number ; i++ )); do
	clear
	cd ${directories[$i]}
 
	echo "We are backing up the full directory, in case anything goes wrong. Press any key..."
	read blah
	cd ../
	tar -cvvf ${directories[$i]}.tar ${directories[$i]}
	gzip  ${directories[$i]}.tar
	cd ${directories[$i]}
	mv ${directories[$i]}.tar.gz .
	
	# Timestamp to create unique backup directories
	back_ts=$(date +%m%d%Y%k%M%S)
	mkdir backup_${back_ts}
		
	# Backing up the necessary Wordpress database
	echo "Please provide the wordpress database name (case sensitive) for ${directories[$i]}:"
	read wp_db
	echo "And please provide the username to the database:"
	read wp_user
	mysqldump --add-drop-table -u ${wp_user} -p ${wp_db} > backup_${back_ts}/${wp_db}.sql
		
	# Make the necessary changes for what to backup.  This is the default as provided by Wordpress.
	echo "Backing up the important files. Press any key..."
	read blah
	cp .htaccess wp-config.php backup_${back_ts}
	cp -r wp-content wp-images wp-includes/languages backup_${back_ts}
	
	# Time to copy the latest wordpress that we downloaded and overwrite all files
	echo "Getting the latest cp of wordpress. Press any key..."
	read blah
	cp ~/latest.tar.gz ./wordpress.tar.gz
	tar -zxvf wordpress.tar.gz
 
	# Overwrite all files
	echo "Overwriting all old Wordpress files with the new. Press any key..."
	read blah
	cd wordpress
	cp -rf * ../
 
	# Copy the files that we backed up back
	echo "Coping the important backed up files back in. Press any key..."
	read blah
	cd ../backup_${back_ts}
	cp -rf * ../
 
	echo "Point your browser to the necessary site and run the upgrade script."
	echo "EG: http://example.com/wp-admin/upgrade.php"
	echo "Update your permalinks and .htaccess."
	echo "Install updated plugins and themes"
	echo "Reactivate plugins"
	echo "Press any key to continue..."
	read blah
done
 
clear
echo "Congratulations! You have successfully upgraded your Wordpress."
echo "Please review that your browser resolves your site."
echo "Enjoy!"